hi,
Can you please help me out for the following issues for the regaular expressions.
1.I need the regualr expression that it has to filter the numbers(for example numbers ranguing from 1 to 20 .but I need the values which is greater than 5(x>5).)

2.i need to filter the two sections from from the table of contents(for example A1,A2,A3,A4,A5 and A6 are the chapters,from this I need to filter the chapters A1 and A5)